Mechanical properties of alloys consisting of two ductile phases

Ankem, Sreeramamurthy; Margolin, Harold; Greene, Charles A.; Neuberger, Brett W.; Oberson, P. Gregory

doi:10.1016/j.pmatsci.2005.10.003

Cited by 159 publications

(63 citation statements)

References 268 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is therefore necessary to investigate the effects of phase interaction on the mechanical behaviors of dual phase materials. Phase boundary could be a strong barrier to obstruct the dislocation motion [25]. Considering the Hall-Petch type relationship, the strengthening coefficient of phase boundary in DSS is measured quantitatively, and then the contributions of phase and grain boundaries on the overall strength are separated.…”

Section: Strengthening Mechanism Of Dual Phase Microstructurementioning

confidence: 99%

See 1 more Smart Citation

Simultaneous improvement of tensile strength and ductility in micro-duplex structure consisting of austenite and ferrite

Chen

Yuan

Jiang

et al. 2014

Materials Science and Engineering: A

View full text Add to dashboard Cite

a b s t r a c tA micro-duplex structure consisting of austenite and ferrite was produced by equal channel angular pressing and subsequent intercritical annealing. As compared to coarse-grained (CG) counterpart, the strength and ductility of micro-duplex samples are enhanced simultaneously due to smaller grain sizes in both phases and more uniformly distributed austenite in ferrite matrix. The average yield stress and uniform elongation are increased to 540 MPa and 0.3 as compared to 403MPa and 0.26 of its CG counterpart respectively. The Hall-Petch coefficients of austenite and ferrite grain boundaries were quantitatively measured as 224.9 and 428.9 MPa μm 1/2 respectively. In addition, a Hall-Petch type coefficient was used to describe the ability of phase boundary to obstruct dislocation motion, which was measured as 309.7 MPa μm 1/2 . Furthermore, the surface-to-volume ratio of phase boundary in microduplex structure was estimated to be 1.17 Â 10 6 m À 1 , which is increased by an order of magnitude as compared to 1.2 Â 10 5 m À 1 of its CG counterpart. Based on the strain gradient theory, a model was proposed to describe the effect of surface-to-volume ratio of phase boundary on strain hardening rate, which shows a good agreement with the experimental results.

show abstract

Section: Strengthening Mechanism Of Dual Phase Microstructurementioning

confidence: 99%

“…NS composites, the bulk strengths tested by experiments exceed the ROM predictions [23]. To describe this strengthening behavior qualitatively, an additional term of yield stress was introduced by considering the interplay between the phases [24,25].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous improvement of tensile strength and ductility in micro-duplex structure consisting of austenite and ferrite

Chen

Yuan

Jiang

et al. 2014

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…The values of A and n constants were selected from available literature data concerning single phase titanium alloys with the chemical composition as close as possible to the composition of individual phases of two-phase alloy (tab. 2) [17,[19][20]. • diameter of primary β phase grains -430 mm • diameter of the colony of α phase lamellae -48 mm • α lamellae thickness -2.1 mm • volume fraction of β phase -7.6 % Globular microstructure in mill-annealed condition can be described by average values of following parameters:…”

Section: Finite Element Modelmentioning

confidence: 99%

Primary Creep Behaviour of Two-Phase Titanium Alloy with Various Microstructure

Ziaja¹,

Motyka²,

Kubiak³

et al. 2016

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Creep and fatigue properties of two-phase titanium alloys show strong dependence on microstructure, especially morphology of the α and β phases which can be controlled to certain extent by proper selection of hot working and heat treatment conditions. In the paper the creep behaviour of Ti-6Al-2Mo-2Cr alloy (VT3-1) at elevated temperature was modelled. Finite element analyses of primary creep stage were carried out taking into account some microstructural features of the two-phase alloy that were included in the physical model and different properties of α and β phases. In order to verify results of calculations distinct types of microstructure were developed in the alloy by heat treatment and creep tests were carried out at elevated temperature (450°C) at various stress levels. Based on the FEM simulations the effect of changes of some microstructure features on primary creep strain development was estimated.

show abstract

“…It is widely accepted that the biphasic microstructure brings excellent strength without weakening too much plasticity. 53 From the point of view of mechanical properties, Ti-5Ag-xFe can be used for different dental devices. The microhardness of Ti-5Ag alloy is about 206 Hv, slightly higher than that of hardened type 3 dental casting gold alloys.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Development of Ti‐Ag‐Fe ternary titanium alloy for dental application

Zhang

Wang

et al. 2011

J Biomed Mater Res

View full text Add to dashboard Cite

A series of titanium-silver-iron ternary alloys have been prepared in this study, and their feasibility as dental materials has been evaluated by the microstructural examination, mechanical testing, corrosion resistance evaluation, surface analysis, and cytotoxicity tests. More and more b-Ti phase appears at room temperature and retains with the increasing of Fe content in Ti-5Ag-xFe alloy systems. The compression strength, wear resistance, and microhardness increase largely (p < 0.05) by the addition of element Fe to Ti-Ag alloy. Moreover, when comparing with commercial pure titanium (CP Ti), nobler electrochemical corrosion behavior could be obtained for Ti-5Ag-1Fe and Ti-5Ag-2.5Fe alloys in the 1% lactic acid solution (pH ¼ 2.1) and 0.1 mol/L H 2 O 2 þ 0.9% NaCl solution (pH ¼ 4.0). The released metal ions from Ti-5Ag-xFe alloys into the simulated fluid are trace, similar to the case of CP Ti. The addition of Fe slightly decreases the corrosion resistance of Ti-5Ag alloy. All experimental Ti-5Ag-xFe alloy extracts do not present any cytotoxicity to L-929 and NIH3T3 cell lines. All in all, the combination of superior corrosion resistance and enhanced mechanical properties make Ti-5Ag-1Fe alloy and Ti-5Ag-2.5Fe alloy suitable for dental applications.

show abstract

Mechanical properties of alloys consisting of two ductile phases

Cited by 159 publications

References 268 publications

Simultaneous improvement of tensile strength and ductility in micro-duplex structure consisting of austenite and ferrite

Simultaneous improvement of tensile strength and ductility in micro-duplex structure consisting of austenite and ferrite

Primary Creep Behaviour of Two-Phase Titanium Alloy with Various Microstructure

Development of Ti‐Ag‐Fe ternary titanium alloy for dental application

Contact Info

Product

Resources

About